Central venous catheters (CVCs) are often required for the care of patient admitted to the intensive care unit (ICU), and are now indispensable in modern-day medical practice. In the United States, it is estimated that 15 million CVC days occur each year in the ICU , and that approximately 80,000 CVC-associated bloodstream infection (BSIs) occur each year [2]. Data from the NNIS system indicate that approximately 40% of the BSIs are associated with a CVC in the ICU. This definition, however, include CVC-related BSIs (CRBSIs) and primary BSIs. In other multicenter surveys, primary BSIs are the leading cause of BSIs (30-35%), followed by CRBSIs (20-30%), and BSIs originating from pneumonia (20%) .